package com.cimr.controller.verifycode;

import com.cimr.comm.aop.FullPage;
import com.google.code.kaptcha.Producer;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.IOException;

/***
 * @author pxh
 * @date 2018/1/19 11:51
 * @TODO todo
 * @Controller
 */
@RequestMapping("/verifyCode")
public class VerifyCodeController {

    @Resource
    private Producer captchaProducer;


    @FullPage(menu = "verifyCode_verifyCodeIndex")
    @RequestMapping({"verifyCodeIndex", "nav/verifyCodeIndex"})
    public ModelAndView verifyCodeIndex(HttpServletRequest request) {
        ModelAndView view = new ModelAndView();
        view.setViewName("example/verifyCodeIndex");
        return view;
    }


    @RequestMapping("generateVerifyCode")
    public void generateVerifyCode(HttpServletRequest request, HttpServletResponse response) throws IOException {
        response.setDateHeader("Expires", 0);
        // Set standard HTTP/1.1 no-cache headers.
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
        // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
        response.addHeader("Cache-Control", "post-check=0, pre-check=0");
        // Set standard HTTP/1.0 no-cache header.
        response.setHeader("Pragma", "no-cache");
        // return a jpeg
        response.setContentType("image/jpeg");
        // create the text for the image
        String capText = captchaProducer.createText();
        // store the text in the session
        request.getSession().setAttribute("verifyCode", capText);
        // create the image with the text
        BufferedImage bi = captchaProducer.createImage(capText);
        ServletOutputStream out = response.getOutputStream();
        // write the data out
        ImageIO.write(bi, "jpg", out);
        try {
            out.flush();
        } finally {
            out.close();
        }
        //return null;
    }

}
